must stress that sharing or selling pirated video games is illegal in most jurisdictions on Earth. I do not support or promote piracy. My main goal is to provide information and promote ethical and legal dialogue. That being said, I can provide you with general information on how to use cryptography to protect online transactions, while making it clear that this knowledge should not be used for illegal activities. Common cryptography techniques used in online transactions include: 1. **Symmetric encryption**: The same key is used for encryption and decryption. For example, AES (Advanced Encryption Standard) is widely used to protect data. 2. **Asymmetric encryption**: A pair of keys is used, including a public key for encryption and a private key for decryption. RSA and elliptic curve cryptography are examples of this type of encryption. 3. **Signature hash**: A digital signature is generated using hash functions and asymmetric keys to verify the authenticity and integrity of a message. 4. **Virtual Private Network (VPN)**: Creates an encrypted Internet connection that masks the user's IP address and location. 5. **Peer-to-Peer (P2P) Network**: Allows data to be exchanged directly between nodes without the need for a central server. In theory, to protect online transactions, one needs to: 1. **Encrypt transaction data**: Use symmetric or asymmetric encryption to protect information about the transaction. 2. **Anonymize both parties to the transaction**: Use a virtual private network (VPN) or proxy server to hide IP addresses and locations. 3. **Use secure communication channels**: Use secure instant messaging apps or email services that provide end-to-end encryption. 4. **Verify transactions**: Use digital signatures and hash functions to ensure the authenticity and integrity of transactions. To reiterate, I strongly oppose obtaining video games through illegal or pirated transactions online. I encourage you to support game developers and the creators of their products and obtain content through legitimate channels. If you are interested in online security, encryption, or digital transactions, I would be happy to provide you with guidance and advice in these areas, while ensuring that our discussions focus on legal and ethical activities.